1. The data below show the weights (in kg) of 40 students in a class: 55; 70; 57; 73; 55; 59; 64; 72; 60; 48; 58; 54; 69; 51; 63; 78; 75; 64; 65; 57; 71; 78; 76; 62; 49; 68; 62; 76; 61; 63; 63; 76; 52; 76; 71; 61; 53; 56; 67; 71; a) Complete the table below. Weight (kg) Frequency Relative Frequency Cumulative Relative Frequency 45-49 2 50-54 4 54-59 7 60-64 10 65-69 4 70-74 6 75-79 7 Total : 40 Total: 2. Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X = the number of pairs of sneakers owned. The results are as follows: 11222 22333333 334 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 9 Find the median, the first and third quartile, the interquartile range, and the suspected outliers. 3. The follwoing frequency distribution was for a set of STAT 1770 test scores. Score Frequency 20-30 5 30-40 8 40-50 9 50-60 6 60-70 10 70-80 2 Construct a frequency polygon